Two parallel, metal plates with separation distance d = 1.00 cm carry charges of equal magnitude but opposite sign. The plates are oriented horizontally. Assume the electric field between the plates is uniform, and it has a magnitude of 1,820 N/C. A charged particle with mass 2.00 x 10⁻¹⁶ kg and charge 1.02 x 10⁻⁶ C is projected from the center of the bottom negative plate with an initial speed of 1.01 x 10⁵ m/s at an angle of 37.0° above the horizontal. Assume the plates are square with side length = 20.0 cm.

Describe the trajectory of the particle.

A. a helix
B. a parabola
C. a straight line
D. a circle